Temperature-controlling apparatus for internal-combustion engines.



F. M. FURBER.

TEMPERATURE CONTROLLING APPARATUS FOR INTERNAL COMBUSTION ENGINES.APPLICATION FILED AUG.4. 1915.

l 16,623 I a Patented Jan. 18, L916.

2 SHEETS-SHEET I.

LEW Elm 1 M F. M. FURBER.

TEMPERATURE CONTROLLING APPARATUS FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED AUG.4. I915.

1., lfififigfio Patented Jan. 18, 1916.

2 SHEETSSHEET 2.

' STAT s PAT131 T;

rannnarcx-m. FURIBER, or nnvnnn, MASSACHUSETTS.

'rEMrEnArURE-ooNrnouIive arrmrus m ltNTERNAL-COMBUSTION ENGINES.

To all whom it may concern:

Be. it lmown that I, FREDERICK M. FUR- BER, a citizen of the UnitedStates, .residing at Revere, in the county ofSuflolk and State ofMassachusetts, have invented certain Improvements in TemperatureControlling Apparatus for Internal-Combustion Engines, of which thefollowing description, in connection with the accompanying drawings, isa specification, like reference char-.

acters onthe drawingsindicating like parts in the several figures. 1

Most internal combustion engines usedin automobiles are equipped with awater cooling system which is designed to radiate heat. from the enginewith sufiicient rapidity to maintain the engine at an eflicientlyoperating. temperature. These cooling. systems are of course designed.With particular reference to the operating conditions in hot weatherand accordingly-it is-found thatthey radiate .the heat so rapidly in.cold weather as to feduce'the temperature of the engine to a point atwhich it cannot operate efficiently. In very severe weather the water inthe cooling .system sometimes freezes even While the engine is inoperation.

The .present' invention aims to devise .means for controllingautomatically the 8' temperature of the as to maintain it.

engine in-such a manner at substantillyalltimes during its operation atan eflicientlyoperative temperature. More specifically the inventionaims to avoid the undesirable reduc tion in temperature of the enginewhich it -is operated in .cold weather; "In the embodiment of theinvention hereinafter described in detail this object is accomplished bysupplying from a source supplemental to the engine jacket theamount'ofheat required to maintain the .w'ater'in thecooling system at thedesired temperature. Preferably the heat of the exhaust fro' n theengine is utilized for this purpose. 1

The invention will be readily understood from the following description,reference the accompanying drawings, Figure 1 is a side view of anapparatus Fig. 2 is a view slightly modified tional view through a partof the apparatus shown in Fig. 2. v

Referring now to the drawings, 2 indithe pipes 6 into the top of thescrew 22, the thermostat .20 4 suflicientlyto ma ntain the valve 18 inits seat and thus prevent the flow of water I Specification of Letters.Patent. Patented J 11 .18, 1916 Application filed August 4,1915.fseriarnaaaeeo.

cates-an internal combustion engine of a typeicoinmonly used inautomobiles; 4, the radiator for the engine; and 6 and 8, the

pipes that conduct the circulating Water or ranged in parallel with theradiator 4 and consists of-a pipe or conduit 10 leading from the pipe 8to .one of the lower ends of another pipe or conduit 12 which is coiledaround the exhaust pipe 14 of the engine, a third conduit 16 connecting.the upper end of the'coil 12 with the pipe 6. A valve 18 siphon. coolingsystem. A- shunt c1rcu1t for the cooling Wateris arcontrols the flow ofwater through this shunt circuit and this valve is operated by athermostat 20 which may be of any convenient constructionbut consists,in the form shown in Fig; .1, merely of a tube or rod of suitable metalwound into helical form supporting the valve 18 .at'its lower end anditself supported at its upper end by an adjustable screw 22 threaded,through a cap 24 of a casing ,orfitting 26 to which the pipes 8 and 10are oined. 3 u

The parts are so adjusted that during the operationoflthe engine thewater in the cooling system flows from the upper part of the waterjacket of the engine through radiator and gradually descends through theradiator as it is cooled. returning again to the lower end of the jacketthrough the pipe 8. This is the ordinary operation of a system of thistype. So long as the] temperature" of the' Water as it passes throughthe casing 26 remains above a predetermined point which may of course bevaried by ad usting the through the shunt circuit formed by the pipes10, 12 and 16; but whenthe temperature of the Water in the coolingsystem drops below a'predetermined point the therwill be expanded mostat2O contracts, thusliftingthe valve'18 away from itsseat and allowing acertain I amount of water to flow through the shunt circuit Where it isheated by the exhaust from the engineand thus raises the temperature ofthe water circulating in the cooling system. As soon, however, as thetemperature of the circulating water has been raised to thefldesiredpoint the thermostat 20.

again closes the valve 18, thus shutting ofl' the flow of water throughthe shunt circuit.

A drain cook .28 is provided at the lowermost point in the shunt circuitand a hand valve 29 is located in the pipe 16. In warm weather whenthere is no occasion for using the auxiliary heating means provided bythis invention the drain cook 28- may be opened and the hand valveclosed, thus draining the water from the part of the shunt circuitbetween these points. The

cooling system of Fig. "'2 includes a pump 32 which creates a positivecirculation of' Water through the system. This arrangement also includesa slightly different construction of thermostatic valve from that shownin Fig. 1. This valve is shown on a larger scale in Fig. 3 from which itwill be seen that it includes a casing 34 and a diaphragm or plate 36perforated as indicated at 37 and clamped in the casing by the cover'38.The thermostat 4:0 depends from the plate 36 and carries at its lowerend a valve 42 which normally rests in a seat formed inthe outlet fromthe casing 34. This thermostat is of a type readily obtainable on themarket and consists of aseries of thinannular metallic disks, the inneredge of each. disk being united to the inner edge of the nextadjacentfdisk on one side and to the outer edge of the adjacentdisk onthe opposite side, thus forming a metallic bellows which expands axiallyor longitudinally as its temperature ,is raised and contracts as thetemperature drops. Thermostats of this type contain some volatileliquid, such as ether, and are much used in radiators for steam heatingsystems. The operation of this thermostat is of course the same'as tat-shownin Fig. 1. Obviously, any suitab eform of thermostat can beused. In both arrangements the water circulating through the coolingsystem flows around the thermostat which consequently. responds readilyto changes in the temperature of the water. 1

The specific arrangements above described are designed merely to setforth clearly the nature of the invention and explain a. convenient modeof applying the invention to two common types of water cooling systems.

It will be readily appreciated by those skilled in-this art-that theinvention is susceptible of much modification without dein said system,and thermostatic mechanism for controlling the action of said means.

2. In an automobile, the combination with an internal combustionengine-and a water cooling system therefor, of means for utigine toraise the temperatureof the water in said system, and mechanismcontrolled by lizing the heat of the exhaust from the enthe temperatureofthe circulating water for controlling the action of said means.

3. In an automobile, the combination with an internal combustion engineand a water cooling-system therefor}- of means for utilizing the'heat ofthe exhaust from the engine to raise the temperature of the circulatingwater, and mechanism controlled by the temperature of the water in saidsystem arranged to operate automatically to, render said means operativewhen the temperature of the water falls below a predetermined point andto render said means inoperative again when the temperature of the waterhas risen above a predetermined, point.

4. Inan automobile, the combination with an internal combustion engineand a water cooling'system therefor, of a water conduit supplemental tosaid system arranged to be heated by the exhaust from the engine, and

means responsive to changes in thetemperature of the water in saidsystem for controlling the flow of water through said conduit. 5. In anautomobile, the combination wlth an internal combustion engine and awater cooling system .therefor,'of a water conduit supplemental to saidsystem arranged to be heated by the exhaust from the engine, and athermostatic valve operative to permit the flow of water through saidconduit when the temperature of the water in said system falls below apredetermined point and to cut off said flow when the temperature of thewater in said system has risen above mined point. I

' 6. In an automobile, the combination with an internal combustionengine and a water cooling system therefor including a radiator, of ashunt circuit-for the water in said system, said circuit including aconduit arranged to be heated by the exhaust from the a predeterengine,a valve for controlling thefiow of. 7

water through said shunt circuit and a thermostat in said systemarranged to operate said valve.

7 In an automobile, the combination with an internal combustion engineand a water cooling system therefor including a radiator, of a shuntcircuit 'for the water in said system, said circuit being in parallelwith the radiator and including a conduit arranged to be heated by theexhaust from the engine, a valve-for controlling the flow of Waterthrough said shunt circuit and a thermostat positioned in said systemnear the lower end of said radiator and arranged to operate said valve.

8. In an automobile, the combination With an internal combustion en -'neand a Water cooling system therefor, o a water conduit supplemental tosaid system arranged to be heated by the exhaust from the engine, and avalve arranged to control the flow of water through said conduit.

9. In an automobile, the combination with an internal combustion engineand a water magmas thermostatic means responsive to changes in thetemperature of the Water in said system and operative to control thesupply of heat from the exhaust to the water in said system.

10. In an automobile, the combination with an internal combustionengine, of a system through which cooling Water for the enginecirculates, said system including a conduit for water constructed andarranged to be heated by the exhaust from the engine, and thermostaticmeans operative to control the supply of heat from said exhaust to saidsystem.

In testimony whereof I have signed my name to this specification.

FREDERICK Ml

